As the Obama administration continues to fight the release of some 2,000 photos that graphically document U.S. military abuse of prisoners in Iraq and Afghanistan, an ongoing Spanish investigation is adding harrowing details to the ever-emerging portrait of the torture inside and outside Guantánamo. Among them: “blows to [the] testicles;” “detention underground in total darkness for three weeks with deprivation of food and sleep;” being “inoculated … through injection with ‘a disease for dog cysts;'” the smearing of feces on prisoners; and waterboarding. The torture, according to the Spanish investigation, all occurred “under the authority of American military personnel” and was sometimes conducted in the presence of medical professionals.

More significantly, however, the investigation could for the first time place an intense focus on a notorious, but seldom discussed, thug squad deployed by the U.S. military to retaliate with excessive violence to the slightest resistance by prisoners at Guantánamo.

The force is officially known as the the Immediate Reaction Force or Emergency Reaction Force, but inside the walls of Guantánamo, it is known to the prisoners as the Extreme Repression Force. Despite President Barack Obama’s publicized pledge to close the prison camp and end torture — and analysis from human rights lawyers who call these forces’ actions illegal — IRFs remain very much active at Guantánamo. >>>